38157197539 has 2 divisors, whose sum is σ = 38157197540. Its totient is φ = 38157197538.

The previous prime is 38157197531. The next prime is 38157197581. The reversal of 38157197539 is 93579175183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38157197539 - 2³ = 38157197531 is a prime.

It is not a weakly prime, because it can be changed into another prime (38157197531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19078598769 + 19078598770.

It is an arithmetic number, because the mean of its divisors is an integer number (19078598770).

Almost surely, 2^38157197539 is an apocalyptic number.

38157197539 is a deficient number, since it is larger than the sum of its proper divisors (1).

38157197539 is an equidigital number, since it uses as much as digits as its factorization.

38157197539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7144200, while the sum is 58.

The spelling of 38157197539 in words is "thirty-eight billion, one hundred fifty-seven million, one hundred ninety-seven thousand, five hundred thirty-nine".